1. Vigilant 130 dB Personal Rape/Jogger/Student Emergency Alarm with LED Light and Included AAA Batteries (PPS8B Blue) (Click Link to Check Price on Amazon)
Editor's Rating : 9.5 out of 10
130dB Emergency/Panic AlarmUser replacable AAA batteries and wrist strap included

2. SABRE Personal Self-Defense Safety Alarm on Key Ring with LOUD Dual Alarm Siren Heard up to 600 ft/185 meters Away. To Use, Pull Metal Chain from Base (Click Link to Check Price on Amazon)
Editor's Rating : 9.9 out of 10
ATTENTION-GRABBING - 110 dB dual siren alarm helps call for assistance in an emergency and helps deter attacker (audible up to 600 feet/185M away)VERSATILE AND USER-FRIENDLY - this sleek, compact modern design keychain attaches to backpack, purse or keys for convenient, instant access, plus greater value with batteries included

3. PPS-23BLK (Click Link to Check Price on Amazon)
Editor's Rating : 9.4 out of 10
LOUD: 130dB attack alarm with push button activation and concealed OFF buttonCLIP: Keyring with purse clip - the ultimate personal protection alarm to carry on your purse or backpack

4. Bear Gentleman 130dB Personal Alarm Safety Security Self-Defense Rape Rob (Brown) (Click Link to Check Price on Amazon)
Editor's Rating : 9.2 out of 10
Professional private alarm. Extremely loud alarm's sound With Adorable Look (≧130db Sounds)Pull out the alarm bolt when in emergency, can alarm make a loud sound for help. High decibel can effectively frighten offenders. When you are safe, please plug the alarm bolt

5. ROBOCOPP SOS Personal Alarm, Original Sound Grenade, Battery Included, Carabiner Included, Blue (Click Link to Check Price on Amazon)
Editor's Rating : 9.1 out of 10
Loud: 120 db. sirenTSA approved